1268012773 has 2 divisors, whose sum is σ = 1268012774. Its totient is φ = 1268012772.

The previous prime is 1268012743. The next prime is 1268012777. The reversal of 1268012773 is 3772108621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844599844 + 423412929 = 29062^2 + 20577^2 .

It is an emirp because it is prime and its reverse (3772108621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1268012773 - 2⁵ = 1268012741 is a prime.

It is a super-2 number, since 2×1268012773² = 3215712784982299058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268012777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634006386 + 634006387.

It is an arithmetic number, because the mean of its divisors is an integer number (634006387).

Almost surely, 2^1268012773 is an apocalyptic number.

It is an amenable number.

1268012773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268012773 is an equidigital number, since it uses as much as digits as its factorization.

1268012773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1268012773 is about 35609.1669798663. The cubic root of 1268012773 is about 1082.3670001781.

The spelling of 1268012773 in words is "one billion, two hundred sixty-eight million, twelve thousand, seven hundred seventy-three".